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2026-06-24 - 22:24
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Wed Jun 24, 2026 13:02:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3907899200190,8cyclictest0-21swapper/2911:45:0422
3907899200190,8cyclictest0-21swapper/2911:45:0322
3907899200190,8cyclictest0-21swapper/2911:45:0322
3904599200167,26cyclictest4407-21CPU1
3904599200167,26cyclictest4407-21CPU1
3904599200167,26cyclictest4407-21CPU1
3904399197182,11cyclictest2464-21CPU0
3904399197182,11cyclictest2464-21CPU0
3904899196156,36cyclictest0-21swapper/412:26:5334
3904899196156,36cyclictest0-21swapper/412:26:5334
3904399194173,18cyclictest0-21swapper/011:00:500
3904399194173,18cyclictest0-21swapper/011:00:500
3904399194173,18cyclictest0-21swapper/011:00:490
3908299193185,6cyclictest0-21swapper/3212:10:2526
3908299193185,6cyclictest0-21swapper/3212:10:2526
3908299193185,6cyclictest0-21swapper/3212:10:2426
3906699189150,29cyclictest0-21swapper/2011:58:5613
3906699189150,29cyclictest0-21swapper/2011:58:5613
3906699189150,29cyclictest0-21swapper/2011:58:5513
390859918776,94cyclictest0-21swapper/3511:55:2729
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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